Students investigate various types of problems using whole numbers and decimals. They use a discussion format while working example problems to help create a baseline for further independent practice. The lesson plan also includes praise...

Students count back with cubes to model subtraction problems. In this subtraction lesson plan, students compare sets of problems and record their results in a table.

In these decimal skills worksheets, students solve the equations and word problems using addition or subtraction. Students then solve the decimal equations and word problems using addition or subtraction.

Students explore the concept of estimating by watching a video, and discussing the strategies for estimation. They estimate the costs for various menu items, then calculate the exact amount spent.

Students practice solving equations adding decimals and integers. Using a worksheet, they identify which pair of numbers goes correctly with the problem. They review their answers and are graded based a rubric given to them.

If you are looking for a website that explains and defines the basics of mental multiplication with helpful hints then you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.

Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.

Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.

This website from The Math Page explains some helpful hints about how to do mental math.

Designed to inform teachers, this booklet addresses questions they may have about how to teach Mental Math.

Test your mental math skills in arithmetic. How many questions can you answer in one minute? Good luck!

[Free Registration/Login may be required to access all resource tools.] Find sums and differences of decimals using mental math.

[Free Registration/Login may be required to access all resource tools.] Use mental math to divide by decimal powers of ten and find a quotient.

[Free Registration/Login may be required to access all resource tools.] Use mental math to multiply by decimal powers of ten.

[Free Registration/Login may be required to access all resource tools.] Use mental math to divide by whole number powers of ten.

Strategies for basic addition and multiplication are explained here and there are several practice worksheets that can be downloaded.

In this activity, students develop estimation and mental arithmetic skills for integer addition and subtraction. In this activity, the Number Line application will be used for targeting estimations.

[Free Registration/Login may be required to access all resource tools.] Evaluate numerical expressions using mental math.

[Free Registration/Login may be required to access all resource tools.] Solve for the unknown in a proportion using mental math.

[Free Registration/Login may be required to access all resource tools.] Use mental math to multiply by whole number powers of ten and find a product.

The University of Saskatchewan offers this resource for the review of mathematical concepts that students need to enter university level math courses. Topics include mental arithmetic, algebra, geometry, trigonometry, exponential and...

This site explains how to mentally add two-digit numbers. Gives exercises and games to practice this skill.

This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.

At this site us these tips & tricks to help students become better mental mathematicians.